homebrew-core/Formula/molten-vk.rb

class MoltenVk < Formula
  desc "Implementation of the Vulkan graphics and compute API on top of Metal"
  homepage "https://github.com/KhronosGroup/MoltenVK"
  url "https://github.com/KhronosGroup/MoltenVK/archive/v1.1.4.tar.gz"
  sha256 "f9bba6d3bf3648e7685c247cb6d126d62508af614bc549cedd5859a7da64967e"
  license "Apache-2.0"

  bottle do
    sha256 cellar: :any, arm64_big_sur: "0ba0530a306310f1c9508d1c87661df6b488ec2db5a32ce35e3613f550b6132e"
    sha256 cellar: :any, big_sur:       "d0fb5ac702f4119ee0a4c294af47b4621f33da63e872ecfc83c00a57d986cfa3"
    sha256 cellar: :any, catalina:      "8731818bcaae271c0583867531674e2ef91be1a4c5c87baaf97ac6b6eff60d38"
  end

  depends_on "cmake" => :build
  depends_on "python@3.9" => :build
  depends_on xcode: ["11.7", :build]
  # Requires IOSurface/IOSurfaceRef.h.
  depends_on macos: :sierra

  # MoltenVK depends on very specific revisions of its dependencies.
  # For each resource the path to the file describing the expected
  # revision is listed.
  resource "cereal" do
    # ExternalRevisions/cereal_repo_revision
    url "https://github.com/USCiLab/cereal.git",
        revision: "51cbda5f30e56c801c07fe3d3aba5d7fb9e6cca4"
  end

  resource "Vulkan-Headers" do
    # ExternalRevisions/Vulkan-Headers_repo_revision
    url "https://github.com/KhronosGroup/Vulkan-Headers.git",
        revision: "37164a5726f7e6113810f9557903a117498421cf"
  end

  resource "SPIRV-Cross" do
    # ExternalRevisions/SPIRV-Cross_repo_revision
    url "https://github.com/KhronosGroup/SPIRV-Cross.git",
        revision: "9cdeefb5e322fc26b5fed70795fe79725648df1f"
  end

  resource "glslang" do
    # ExternalRevisions/glslang_repo_revision
    url "https://github.com/KhronosGroup/glslang.git",
        revision: "ae2a562936cc8504c9ef2757cceaff163147834f"
  end

  resource "SPIRV-Tools" do
    # External/glslang/known_good.json
    url "https://github.com/KhronosGroup/SPIRV-Tools.git",
        revision: "5dd2f76918bb2d0d67628e338f60f724f3e02e13"
  end

  resource "SPIRV-Headers" do
    # External/glslang/known_good.json
    url "https://github.com/KhronosGroup/SPIRV-Headers.git",
        revision: "07f259e68af3a540038fa32df522554e74f53ed5"
  end

  resource "Vulkan-Tools" do
    # ExternalRevisions/Vulkan-Tools_repo_revision
    url "https://github.com/KhronosGroup/Vulkan-Tools.git",
        revision: "dbd221b2bc7acbfe993be40fbfbf4f4a0a1ed816"
  end

  def install
    resources.each do |res|
      res.stage(buildpath/"External"/res.name)
    end
    mv "External/SPIRV-Tools", "External/glslang/External/spirv-tools"
    mv "External/SPIRV-Headers", "External/glslang/External/spirv-tools/external/spirv-headers"

    # Build glslang
    cd "External/glslang" do
      system "./build_info.py", ".",
              "-i", "build_info.h.tmpl",
              "-o", "build/include/glslang/build_info.h"
    end

    # Build spirv-tools
    mkdir "External/glslang/External/spirv-tools/build" do
      # Required due to files being generated during build.
      system "cmake", "..", *std_cmake_args
      system "make"
    end

    # Build ExternalDependencies
    xcodebuild "-project", "ExternalDependencies.xcodeproj",
               "-scheme", "ExternalDependencies-macOS",
               "-derivedDataPath", "External/build",
               "SYMROOT=External/build", "OBJROOT=External/build",
               "build"

    # Create SPIRVCross.xcframework
    xcodebuild "-quiet", "-create-xcframework",
               "-output", "External/build/Latest/SPIRVCross.xcframework",
               "-library", "External/build/Intermediates/XCFrameworkStaging/" \
                           "Release/Platform/libSPIRVCross.a"

    # Create SPIRVTools.xcframework
    xcodebuild "-quiet", "-create-xcframework",
               "-output", "External/build/Latest/SPIRVTools.xcframework",
               "-library", "External/build/Intermediates/XCFrameworkStaging/" \
                           "Release/Platform/libSPIRVTools.a"

    # Created glslang.xcframework
    xcodebuild "-quiet", "-create-xcframework",
               "-output", "External/build/Latest/glslang.xcframework",
               "-library", "External/build/Intermediates/XCFrameworkStaging/" \
                           "Release/Platform/libglslang.a"

    # Build MoltenVK Package
    xcodebuild "-project", "MoltenVKPackaging.xcodeproj",
               "-scheme", "MoltenVK Package (macOS only)",
               "SYMROOT=#{buildpath}/build", "OBJROOT=build",
               "build"

    (libexec/"lib").install Dir["External/build/Intermediates/XCFrameworkStaging/Release/" \
                                "Platform/lib{SPIRVCross,SPIRVTools,glslang}.a"]
    glslang_dir = Pathname.new("External/glslang")
    Pathname.glob("External/glslang/{glslang,SPIRV}/**/*.{h,hpp}") do |header|
      header.chmod 0644
      (libexec/"include"/header.parent.relative_path_from(glslang_dir)).install header
    end
    (libexec/"include").install "External/SPIRV-Cross/include/spirv_cross"
    (libexec/"include").install "External/glslang/External/spirv-tools/include/spirv-tools"
    (libexec/"include").install "External/Vulkan-Headers/include/vulkan" => "vulkan"
    (libexec/"include").install "External/Vulkan-Headers/include/vk_video" => "vk_video"

    frameworks.install "Package/Release/MoltenVK/MoltenVK.xcframework"
    lib.install "Package/Release/MoltenVK/dylib/macOS/libMoltenVK.dylib"
    lib.install "build/Release/libMoltenVK.a"
    include.install "MoltenVK/MoltenVK/API" => "MoltenVK"

    bin.install "Package/Release/MoltenVKShaderConverter/Tools/MoltenVKShaderConverter"
    frameworks.install "Package/Release/MoltenVKShaderConverter/" \
                       "MoltenVKShaderConverter.xcframework"
    include.install Dir["Package/Release/MoltenVKShaderConverter/include/" \
                        "MoltenVKShaderConverter"]

    (share/"vulkan").install "MoltenVK/icd" => "icd.d"
  end

  test do
    (testpath/"test.cpp").write <<~EOS
      #include <vulkan/vulkan.h>
      int main(void) {
        const char *extensionNames[] = { "VK_KHR_surface" };
        VkInstanceCreateInfo instanceCreateInfo = {
          VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO, NULL,
          0, NULL,
          0, NULL,
          1, extensionNames,
        };
        VkInstance inst;
        vkCreateInstance(&instanceCreateInfo, NULL, &inst);
        return 0;
      }
    EOS
    system ENV.cc, "-o", "test", "test.cpp", "-I#{include}", "-I#{libexec/"include"}", "-L#{lib}", "-lMoltenVK"
    system "./test"
  end
end